AST-39: Unsupported Technology Assets, Applications and/or Services (TAAS)
Mechanisms exist to prevent unsupported Technology Assets, Applications and/or Services (TAAS) by: (1) Removing and/or replacing TAAS when support for the components is no longer available from the developer, vendor or manufacturer; and (2) Requiring justification and documented approval for the continued use of unsupported TAAS required to satisfy mission/business needs.
Renumbered: Formerly TDA-17 in SCF 2025.4.
Control Question: Does the organization prevent unsupported Technology Assets, Applications and/or Services (TAAS) by: (1) Removing and/or replacing TAAS when support for the components is no longer available from the developer, vendor or manufacturer; and (2) Requiring justification and documented approval for the continued use of unsupported TAAS required to satisfy mission/business needs?
General (25)
| Framework | Mapping Values |
|---|---|
| CIS CSC 8.1 | 2.2 |
| CIS CSC 8.1 IG1 | 2.2 |
| CIS CSC 8.1 IG2 | 2.2 |
| CIS CSC 8.1 IG3 | 2.2 |
| MITRE ATT&CK 16 | T1189 T1195 T1195.001 T1195.002 T1543 T1543.002 |
| MPA Content Security Program 5.3.1 | TS-4.2 |
| NIST AI 100-1 (AI RMF) 1.0 | GOVERN 1.7 |
| NIST 800-53 R4 | SA-22 |
| NIST 800-53 R5.2 | SA-22 |
| NIST 800-53B R5 (low) (source) | SA-22 |
| NIST 800-53B R5 (moderate) (source) | SA-22 |
| NIST 800-53B R5 (high) (source) | SA-22 |
| NIST 800-82 R3 | SA-22 |
| NIST 800-82 R3 LOW OT Overlay | SA-22 |
| NIST 800-82 R3 MODERATE OT Overlay | SA-22 |
| NIST 800-82 R3 HIGH OT Overlay | SA-22 |
| NIST 800-161 R1 | SA-22 |
| NIST 800-161 R1 C-SCRM Baseline | SA-22 |
| NIST 800-161 R1 Level 2 | SA-22 |
| NIST 800-161 R1 Level 3 | SA-22 |
| NIST 800-171 R3 (source) | 03.16.02.a |
| NIST 800-171A R3 (source) | A.03.16.02.a |
| NIST CSF 2.0 (source) | PR.PS-02 PR.PS-03 |
| OWASP Top 10 2025 | A06:2025 |
| SCF DPMP 2026 | 7.5 |
US (14)
| Framework | Mapping Values |
|---|---|
| USA Federal CMS MARS-E 2.0 | SA-22 SA-22.a SA-22.b |
| USA Federal C2M2 2.1 | THIRD-PARTIES-2i |
| USA Federal DoW BaTB IT 2026 | 3 |
| USA Federal DoW BaTB OT 2026 | 9 |
| USA Federal CJIS Security Policy 6.0 | SA-22 |
| USA Federal FFIEC ITEH 2016 | II.C.11 |
| USA Federal FedRAMP R5 (low) | SA-22 |
| USA Federal FedRAMP R5 (moderate) | SA-22 |
| USA Federal FedRAMP R5 (high) | SA-22 |
| USA Federal FedRAMP R5 (LI-SaaS) | SA-22 |
| USA Federal IRS 1075 2021 | SA-22 |
| USA Texas DIR SCSC 2.2 2025 | SA-22 |
| USA Texas TX-RAMP Level 1 | SA-22 |
| USA Texas TX-RAMP Level 2 | SA-22 |
EMEA (6)
| Framework | Mapping Values |
|---|---|
| EMEA CHE FINMA Circular 2023/1 | IV.B.c-57 |
| EMEA Germany C5 2026 | AM-04.01AC AM-05.01B.5 PSS-03.01B.3 |
| EMEA EU DORA RTS 2024 | Article 4.2(b)(ix) Article 8.2(a)(iii) Article 34.1(b) Article 34.1(e) |
| EMEA UK Cyber Essentials 3.3 | 3-BP2 |
| EMEA LUX CCSF 20/750 2020 | 3.5-55 |
| EMEA Saudi Arabia SACS-002 2022 | VII.B.TPC-51 |
APAC (10)
| Framework | Mapping Values |
|---|---|
| APAC Australia CCM 2026 | GOV-14 PRO-07 |
| APAC Australia IoT Code of Practice 2024 | 3.0 |
| APAC Australia Essential 8 2024 | ISM-0304 ISM-1501 ISM-1704 ISM-1905 |
| APAC Australia ISM June 2026 | ISM-0304 ISM-1501 ISM-1704 ISM-1753 ISM-1848 ISM-1905 ISM-1981 ISM-1982 |
| APAC India RBI Digital Payments 2021 | 71.c |
| APAC Malaysia RMiT 2025 | 10.17 10.17(c) |
| APAC New Zealand HISF MLHSP 2023 | HHSP43 HML43 |
| APAC New Zealand NZISM 3.9 | 12.4.7.C.01 |
| APAC Singapore CCOP CII 2026 | 10.2.7 12.7.4 |
| APAC Singapore MAS TRM 2021 | 7.3.1 7.3.3 |
Americas (4)
| Framework | Mapping Values |
|---|---|
| Americas Bermuda BMACCC 2020 | 6.16 |
| Americas Canada ITSP-10-171 2025 | 03.16.02.A |
| Americas Canada OSFI B-13 2022 | 2.2.5 |
| Americas Canada OSFI Self-Assessment Guidance | 2.2.5 |
Capability Maturity Model
Level 0 — Not Performed
Practices are non-existent, based on the inability to demonstrate an implemented and operational capability. A reasonable person would conclude the control is not being performed.
Level 1 — Performed Informally
Technology Development & Acquisition (TDA) domain capabilities are ad hoc and inconsistent. Capability criteria associated with this control may include: ▪ Policies, standards & procedures associated with TDA domain capabilities provide limited coverage due to the depth and breadth of the existing documentation. ▪ Technology development & acquisition-related activities are decentralized (e.g., a localized/regionalized function) and uses non-standardized methods to implement secure, resilient and compliant practices. ▪ Secure development practices loosely conform to industry-recognized standards for secure engineering (e.g., OWASP, NIST SP 800-218 and NIST SP 800-160).
Level 2 — Planned & Tracked
Technology Development & Acquisition (TDA) capabilities are requirements-driven, but are not standardized across the entity (e.g., local/regional level consistency). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with TDA domain capabilities are formally documented and centrally-managed by the entity. ▪ Standardized Operating Procedures (SOP) associated with TDA domain capabilities are documented and maintained by process owners. ▪ IT and/or cybersecurity personnel work with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with TDA domain capabilities to address applicable statutory, regulatory and/or contractual requirements for Technology Assets, Applications, Services and/or Data (TAASD). ▪ Technology development and acquisition-related controls are primarily administrative and preventative in nature (e.g., policies, standards and procedures & guidelines). ▪ Technology development and acquisition management may be a defined function (e.g., team or department) or assigned as an additional duty to existing IT and/or cybersecurity personnel. ▪ Secure development practices mostly conform to industry-recognized standards for secure engineering of Technology Assets, Applications and/or Services (TAAS) (e.g., OWASP, NIST SP 800-218 and NIST SP 800-160). ▪ An application development team, or similar function, uses a structured process to design, build and maintain secure configurations for test, development, staging and production environments. ▪ An application development team, or similar function, provides in-house support or contract external providers for support with unsupported system components.
Level 3 — Well Defined
Asset Management (AST) capabilities are standardized across the entity for applicability to People, Processes, Technologies, Data and/or Facilities (PPTDF) to ensure consistency for Technology Assets, Applications, Services and/or Data (TAASD). Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Policies and standards associated with AST domain capabilities are formally documented and centrally-managed by the entity's Governance, Risk & Compliance (GRC) team, or similar function. ▪ Standardized Operating Procedures (SOP) associated with AST domain capabilities are well-documented and kept current by process owners. ▪ An IT Asset Management (ITAM) team, or similar function, is appropriately staffed and supported to implement and maintain AST domain capabilities. ▪ Technology is leveraged to enhance the efficiency and accuracy of ITAM operations (e.g., ITAM platform, (e.g., Configuration Management Database (CMBD) Asset Management solution). ▪ The entity's Governance, Risk & Compliance (GRC) team, or similar function, works with business stakeholders and process owners to appropriately scope and reasonably implement cybersecurity and data protection controls associated with AST domain capabilities to address Minimum Compliance Requirements (MCR) (e.g., applicable statutory, regulatory and/or contractual requirements) and Discretionary Security Requirements (DSR) (e.g., entity-required controls). ▪ An implemented and operational capability exists to prevent unsupported Technology Assets, Applications and/or Services (TAAS) by: (1) Removing and/or replacing TAAS when support for the components is no longer available from the developer, vendor or manufacturer; and (2) Requiring justification and documented approval for the continued use of unsupported TAAS required to satisfy mission/business needs.
Level 4 — Quantitatively Controlled
Technology Development & Acquisition (TDA) capabilities, in addition to being standardized across the entity and centrally managed to ensure consistency across Technology Assets, Applications, Services and/or Data (TAASD), efforts are metrics driven to provide sufficient insight for decision makers to predict optimal performance, ensure continued operations and/or identify areas for improvement. Capability criteria associated with this control reasonably expect the following criteria to exist: ▪ Applicable SCR-CMM Level 3 (Well Defined) capabilities are implemented and operational. ▪ Metrics reporting includes quantitative analysis of Key Performance Indicators (KPIs). ▪ Metrics reporting includes quantitative analysis of Key Risk Indicators (KRIs). ▪ Scope of metrics, KPIs and KRIs covers organization-wide cybersecurity and data protection controls, including functions performed by third-parties. ▪ Organizational leadership maintains a formal process to objectively review and respond to metrics, KPIs and KRIs (e.g., monthly or quarterly review). ▪ Based on metrics analysis, process improvement recommendations are submitted for review and are handled in accordance with change control processes. ▪ Business and technical stakeholders are involved in reviewing and approving proposed changes to evolve capabilities.
Level 5 — Continuously Improving
Utilize SCR-CMM Level 3 or Level 4 (if available) criteria definitions: ▪ There are no defined Level 5 criteria, since it is reasonable to assume a continuously-improving process is not necessary to operationalize this control. ▪ Level 5 capabilities should be considered “world-class” where the control builds on Level 4 capabilities, but are continuously improving through Artificial Intelligence (AI) and/or Machine Learning (ML) technologies. ▪ While it may be possible to develop responsive capabilities for this control through the use of AI and/or ML technologies, the criteria would be organization-specific to define.
Assessment Objectives
- AST-39_A01 support from external providers is defined.
- AST-39_A02 system components are replaced when support for the components is no longer available from the developer, vendor, or manufacturer.
Evidence Requirements
- E-AST-09 Computer Lifecycle Plan (CLP)
-
Documented evidence of a Computer Lifecycle Plan (CLP) that describes how the life of technology assets is managed.
Asset Management
Technology Recommendations
Micro/Small
- Cybersecurity Supply Chain Risk Management (C-SCRM) program
- Product / project management
- Computer Lifecycle Program (CLP)
- IT Asset Management (ITAM) program
- Risk Management Program (RMP)
Small
- Cybersecurity Supply Chain Risk Management (C-SCRM) program
- Product / project management
- Computer Lifecycle Program (CLP)
- IT Asset Management (ITAM) program
- Risk Management Program (RMP)
Medium
- Cybersecurity Supply Chain Risk Management (C-SCRM) program
- Product / project management
- Computer Lifecycle Program (CLP)
- IT Asset Management (ITAM) program
- Risk Management Program (RMP)
Large
- Cybersecurity Supply Chain Risk Management (C-SCRM) program
- Product / project management
- Computer Lifecycle Program (CLP)
- IT Asset Management (ITAM) program
- Risk Management Program (RMP)
Enterprise
- Cybersecurity Supply Chain Risk Management (C-SCRM) program
- Product / project management
- Computer Lifecycle Program (CLP)
- IT Asset Management (ITAM) program
- Risk Management Program (RMP)